Updating Doom Emacs.

.emacs.d/modules/lang/nix/autoload.el

@@ -39,3 +39,25 @@
         ((user-error "No search engine is enabled. Enable helm or ivy!")))
   ;; Tell lookup module to let us handle things from here
   'deferred)
+
+;;;###autoload
+(defun +nix-shell-init-mode ()
+  "Resolve a (cached-)?nix-shell shebang to the correct major mode."
+  (save-excursion
+    (goto-char (point-min))
+    (save-match-data
+      (if (not (re-search-forward "#! *\\(?:cached-\\)?nix-shell +-i +\\([^ \n]+\\)" 256 t))
+          (message "Couldn't determine mode for this script")
+        (let* ((interp (match-string 1))
+               (mode
+                (assoc-default
+                 interp
+                 (mapcar (lambda (e)
+                           (cons (format "\\`%s\\'" (car e))
+                                 (cdr e)))
+                         interpreter-mode-alist)
+                 #'string-match-p)))
+          (when mode
+            (prog1 (set-auto-mode-0 mode)
+              (when (eq major-mode 'sh-mode)
+                (sh-set-shell interp)))))))))

.emacs.d/modules/lang/nix/config.el

@@ -1,6 +1,7 @@
 ;;; lang/nix/config.el -*- lexical-binding: t; -*-
 
 (use-package! nix-mode
+  :interpreter ("\\(?:cached-\\)?nix-shell" . +nix-shell-init-mode)
   :mode "\\.nix\\'"
   :config
   (set-company-backend! 'nix-mode 'company-nixos-options)

.emacs.d/modules/lang/nix/packages.el

@@ -1,11 +1,11 @@
 ;; -*- no-byte-compile: t; -*-
 ;;; lang/nix/packages.el
 
-(package! nix-mode)
-(package! nix-update)
+(package! nix-mode :pin "5b5961780f3b1c1b62453d2087f775298980f10d")
+(package! nix-update :pin "fc6c39c2da3fcfa62f4796816c084a6389c8b6e7")
 
 (when (featurep! :completion company)
-  (package! company-nixos-options))
+  (package! company-nixos-options :pin "977b9a505ffc8b33b70ec7742f90e469b3168297"))
 
 (when (featurep! :completion helm)
-  (package! helm-nixos-options))
+  (package! helm-nixos-options :pin "977b9a505ffc8b33b70ec7742f90e469b3168297"))